Geometric progression
t1,t2,t3...
t4+t5=3
t9+t10=9375
Determine the progression

If you have the following equation, 2/3x+5/6-x=2-3/4x what would you multiply each term by to get rid of all the fractions

What is the ratio of the length of an object in yards to the length of the same object in miles?

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?